Yes, but you quickly regret it.

You stay near Kris' door, watching the way their hand moves under their pants and the way they try to keep their moans quiet, no doubt trying to keep you and Susie from interrupting their private time. You notice their hand movements start moving faster, and their breaths start happening quicker. The noises on their phone also start getting a bit louder, which seems to signal that the end, and Kris' impending climax, is getting near.

Not wanting to be left out of the fun, you reach down and begin playing with your member through your clothes. You now realize that you've gotten fully erect from watching this lewd display. Before you can get too into it, however, all the sounds suddenly stop. You look back through the crack in the door and see Kris staring back at you. Their phone is now silent, and the hand that was once down their pants is now underneath their pillow. You see the glint of something sharp in the darkness, and quickly pull your hand away from your crotch as you think of an excuse. You eventually settle on you heard noises and wanted to check up on Kris.

"I'm fine." Kris says. You wait for them to offer anything more, but nothing comes. After a few seconds, you accept that your free show has come to an end, and step away from Kris' bedroom. Despite no longer being in sight of Kris, you feel like you can still feel them staring at you. You're starting to wish you didn't stay near Kris' door. Regardless, you head back to your air mattress, trying not to wake up Susie, who is still asleep. You wait a little bit to see if the noises from Kris' phone start up again, but it never does. It seems like Kris won't be attempting that again, at least for tonight.

You close your eyes once again, and try to get some sleep.